Definition of 'hair'

Noun

1. a covering for the body (or parts of it) consisting of a dense growth of threadlike structures (as on the human head); helps to prevent heat loss; "he combed his hair"; "each hair consists of layers of dead keratinized cells"
2. a very small distance or space; "they escaped by a hair's-breadth"; "they lost the election by a whisker"
      Synonyms: hair's-breadth hairsbreadth whisker
3. filamentous hairlike growth on a plant; "peach fuzz"
      Synonyms: fuzz tomentum
4. any of the cylindrical filaments characteristically growing from the epidermis of a mammal; "there is a hair in my soup"
      Synonyms: pilus
5. cloth woven from horsehair or camelhair; used for upholstery or stiffening in garments
      Synonyms: haircloth
6. a filamentous projection or process on an organism

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